The Agilent 6655A is a 480 W single-output DC power supply engineered for automated test equipment systems and laboratory environments. It delivers programmable DC output from 0 to 120 V at 0 to 4 A (rated at 40°C), with exceptional load regulation and low noise characteristics. The supply maintains tight voltage programming accuracy of 0.06% + 51 mV and current accuracy of 0.15% + 4 mA across its operating range.
Technical Specifications
Output Ratings
• Voltage: 0 to 120 V
• Current: 0 to 4 A (at 40°C); 3.6 A (at 50°C); 3.4 A (at 55°C)
• Total Power: 480 W
Regulation & Noise
• Line Regulation: 0.5 mV
• Load Regulation: 1 mV
• Voltage Ripple (20 Hz–20 MHz): 700 µV RMS, 7 mV peak-to-peak
• Current Ripple: 2 mA RMS
Transient Response
• Voltage Recovery: <100 µs to previous level within 0.1% or 20 mV
• Settling Time: <60 ms to within 1 LSB (0.025% of rated voltage)
• Rise/Fall Time (10/90%): <15 ms
– Key Features
• Programmable overvoltage and overcurrent protection
• Built-in overtemperature protection and self-test capability
• Constant voltage and constant current operation modes
• Fan speed control for reduced acoustic noise in lab settings
• DC floating output: ±240 Vdc from chassis ground
• Remote sensing up to half rated output
• User-definable power-on state
• Fast crowbar and mode crossover protection
– Compatibility & Integration
The 6655A interfaces via GPIB (IEEE-488.2) with SCPI-compatible commands, supporting serial linking of up to 16 units through a single GPIB address. Analog programming inputs and digital connectors enable remote voltage and current control. VXIplug&play drivers streamline integration into test systems. Input options include 120 Vac (104–127 Vac, 47–63 Hz), 220 Vac (191–233 Vac), and 100 Vac variants (87–106 Vac). Input power consumption: 1,100 W at full load, 120 W at no load.
